Question

How much does a watch lose per day, if its hands coincide every 64 minutes?

Answer 1

do you mean how much time a watch looses per day ?

Answer 2

if so

1 hour = 60 mins

and in this case 1 hour = 64 mins

so your loosing 4 mins every hour

since there are 24 hours in a day, simply 24 * 4 = 96 minutes.

Answer 3

Actually this is more complicated than just this.
If you think carefully, the hands of a watch reunite after an hour and and 5 minutes approximately.
Like at 0000hrs, then at 0105hrs, the 0210hrs, and so on..

Answer 4

yes you are right

Answer 5

oh yes your right!